- Alexander : Formula: - to find h.p. multiply the number of your drives by Alexander.
- Alexander : harness leather : Alexander utmost horse power
- Alexander 1917 calendar : Let Alexander : guard your power
- Alexander 1918 calendar : let Alexander : shoulder your power load
- Alexander 1918 calendar : let Alexander : rim-grip every power pulley in your plant
HP : FORMULA: to find horse power - take the number of your drives and multiply by Alexander